JPS63106192A - Roll bar connecting structure of uneven-ground travelling car - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a roll bar connection structure for an all-terrain vehicle.

(Conventional technique 1jj) In uneven terrain vehicles such as tricycles and four-wheeled vehicles called buggies, a round pipe roll bar is installed above a round pipe frame as disclosed in Utility Model Application No. 134042/1983. Equipping is done.

In order to make the roll bar removable from the frame, male and female forged joints were conventionally connected to the pipe ends of the 1M joint and bolted together.

(Problems to be Solved by the Invention) However, since a pair of male and female forged joints are required for each connection, the weight increases, and since the male and female joints are joined to the end of the pipe respectively, installation work is required. It becomes troublesome. Furthermore, if a split roll bar is used, the weight will further increase and the installation work will be troublesome.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a roll bar connection structure for an all-terrain vehicle in which pipe ends can be connected while ensuring strength without using forged joints, and the connection part can be made lighter and simpler. It is in.

(Means for Solving the Problems) In order to achieve the above object, the present invention forms a diametrically opposed flat surface on at least one end of a vibrator, and erects a collar therebetween. A joint portion having a flat surface that fits into the other end of the vibe is provided,
A feature is that a bolt is passed through the flat surface of the joint portion, the flat surface of the end of the vibrator, and the inside of the collar, and a nut is fastened thereto.

(Function) Simply form a flat surface at the end of the vibrator, install a collar between them, and provide a joint part separately or integrally.
It is lighter than a forged joint, has a simple structure, and is easy to join. Since a collar for passing bolts is installed between the flat surfaces, the bolts and nuts can be tightened reliably, and sufficient strength is ensured. In addition, since they fit together on flat surfaces, they can be easily connected by matching the direction of the bolts.

(Example) Examples will be described below based on the accompanying drawings.

Figures 1 and 2 schematically show the same plane as the side surface of the off-road vehicle, with the engine (5) etc. mounted on the rear part of the round pipe frame (1), and the seat (6) in front of it. are installed, and left and right front wheels (
7), (7) and rear wheels (8), (8) are suspended, (9)
is the handle. A round pipe roll bar (11) is detachably installed on one side of the frame (1).

The roll bar (11) is composed of a front pipe (12), a center pipe (!3), a rear pipe (14), a roof pipe (15), and an upper side pipe (16), each forming a pair on the left and right. Left and right center pipes (13)
and upper side pipes (16) are continuous at the top, and the continuous upper part is connected to the left and right roof pipes (15).
), a resin-molded roof panel (18) is attached to the roof part, and a center pipe (
An upper side pipe (18) is joined to the intermediate portion of the pipe (13). The front pipe (12) and the catch pipe (14) can be freely divided from the front and rear ends of the roof pipe (15) via their respective dividing portions (A) and (B).

In order to install such a roll bar (11), pipe ends (2), (3), and (4) are provided at the left and right front portions of the frame (1), and at the middle and rear ends of the seat (6). are erected, and the front pipe (12) and center pipe (
13) and rear pipe (14) are connected to their respective connecting parts (C
), (D).

It can be attached and detached via (E).

In the above, connecting parts (A), (B), (C:), (D
), (E) are constructed as follows.

3 to 5 show the first embodiment, and for convenience of explanation, (21) will be described as one end of the vibrator and (31) as the other end of the pipe.

First, move both pipe ends (21) and (31) in the left and right direction (
A pair of flat surfaces (22) and (32) are respectively formed by machining and movable from the vehicle rjj direction), and a concentric mounting hole (23) is formed in each of the pair of flat surfaces (22) and (32). ),
(33) and a collar (24) between them.
), (34) will be welded and constructed. and both pipe ends (21).

(31) and their flat surfaces (22),
A flat surface (2B) that contacts (32) from the outside, (3
B) and a pair of joint plates (25) and (35) that fit approximately half the circumference of the pipe. The flat surfaces (2B) and (3G) of both joint plates (25) and (35) have two mounting holes (27
) and (37) respectively, one joint plate (25) is fitted to one side of the outer periphery of the pipe end (21) and fixed by welding, and the other joint plate (35) ) to the other side of the outer periphery of the pipe end (3) and set it in the same way.

According to this structure, each pipe end (21), (
Joint plate (25) provided for 31).

The protruding halves of (35) are connected to opposite flat surfaces (32).

(22) and both pipe ends (21).
.

(31) and insert two bolts (41), (41) from the - side (outside of the vehicle body) into the mounting holes (37), (2).
3) Penetrate through the collars (24), (34) and mounting holes (23), (33), and (27), and fasten nuts (42) and (42) to their tips.

Next, a second embodiment shown in FIGS. 6 and 7 will be described.

In this embodiment, a flat surface (52) and two mounting holes (53) similar to those described above are formed at one pipe end (51), and a collar (54) is installed thereon, and the other pipe end (51) is provided with a collar (54). 81) is expanded to integrally mold a joint portion (65) that fits on the outer periphery of the pipe end portion (51) indicated in f07. The joint part (65) has the same flat surface (6B) and 2
mounting holes (67).

According to this structure, the pipe end (51) is inserted into the diagonal part (65) and similarly connected with two wooden bolts (71) and nuts (72).

By integrally molding the joint portion (65) in this manner, the number of parts can be minimized, contributing to further weight reduction.

Incidentally, as shown in FIG. 7, the joint portion (65) and the pipe end portion (51) inserted therein may be processed into a hexagonal shape.

(Effects of the Invention) As described above, according to the present invention, the pipe ends of the roll bar can be connected while ensuring strength while reducing the weight and simplifying the connecting portion.

[Brief explanation of the drawing]

1 and tjIJ2 are a schematic side view and the same plan view of the off-road vehicle, FIG. 3 is a side view of the pipe end showing the first embodiment, and FIG. 4 is a sectional view taken along the line Fir-IV in FIG. 3. , FIG. 5 is a plan view of the connected state, FIG. 6 is a plan view of the connected state showing the second embodiment, and FIG. 7 is a sectional view taken along the line 1--2 of FIG. 6. In the drawings, (1) is the frame, (11) is the roll bar, (21), (31), (51), and (81) are the pipe ends, and (22), (32), and (52) are the Flat surface, (24), (34), (54) are colored, (2
5), (35), (85) are joint parts, (2B
). (3B), (8B) are flat surfaces, (41), (71)
is a bolt, and (42) and (72) are nuts.

Claims (3)

[Claims] (1) In an all-terrain vehicle equipped with a split-type round pipe roll bar above a round pipe frame, at least one of the pipe ends at the joint between the frame and the roll bar and at the split part of the roll bar has a diameter forming flat surfaces facing each other in the direction, a collar is installed between the flat surfaces, a joint portion having a flat surface that fits on the outside of the flat surface is provided at the other end of the pipe, and a joint portion of the joint portion is provided. A roll bar connection structure for an all-terrain vehicle, characterized in that a nut is fastened by passing a bolt through a flat surface, the flat surface of the pipe end, and the collar. (2) In claim 1, a pair of the flat surfaces are provided on both ends of the pipe, and a pair of joint plates that fit together on the flat surfaces of both ends of the pipe are provided on both ends of the pipe. A roll bar connection structure for an all-terrain vehicle, characterized by the fact that each roll bar is fixed on the outer periphery. (3) In claim 1, at least one pair of the flat surfaces is provided on one of the pipe ends, and the joint part that fits around the outer periphery of the one pipe end is provided on the other pipe end. A roll bar connection structure for an all-terrain vehicle, characterized by being integrally formed.